* {
    padding: 0;
    margin: 0;
}
ul,li {
    list-style: none;
}
a {
    text-decoration: none;
}
.mr0 {
    margin-right: 0;
}
.clear::after {
    content: '';
    display: block;
    clear: both;
}
.container {
    width: 1700px;
    margin: 0 auto;
}
body {
    background-color: #333;
}